Method and system for active noise cancellation based on remote noise measurement and supersonic transport

Patent metadata

Field	Value
Publication number	US-9318096-B2
Application number	US-94283910-A
Country	US
Kind code	B2
Filing date	Nov 9, 2010
Priority date	Sep 22, 2010
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

An audio processing device may estimate noise effects at a particular location based on noise measurement data corresponding to one or more noise sources. The audio processing device may modify one or more output audio content transmitted by the audio processing device to that particular location such that the modification may cancel the estimated noise effects at the particular location, at time when the output audio streams are received at that location. The noise effects estimation may also be based on audio reception measurement data at the particular location. The noise measurement data and/or the audio reception measurement data may be generated by audio capturing devices placed at or near noise sources, and/or at or near the particular location, respectively. The noise measurement data and/or the audio reception measurement data may be communicated to the audio processing device using wired and/or wireless connections.

First claim

What is claimed is:

1. A method comprising:
in an audio processing device:
receiving noise measurement data corresponding to one or more noise sources;
receiving location or orientation information related to the noise source(s) and to a particular location;
determining spatial orientation data associated with the particular location relative to said one or more noise sources using the location or orientation information received;
estimating, based on said noise measurement data and said spatial orientation data, an effect of noise caused by said one or more noise sources at said particular location; and
modifying one or more output audio streams based on said effect of noise, to cancel said effect of noise caused by said one or more noise sources at said particular location;
wherein the noise source is located remotely from the particular location and the audio device.

2. The method according to claim 1 , comprising receiving said noise measurement data via at least one wireless personal area network (WPAN) or wireless local area network (WLAN) interface.

3. The method according to claim 1 , wherein said noise measurement data comprises samples of noise signals captured at said one or more noise sources.

4. The method according to claim 1 , comprising:
receiving audio reception measurement data corresponding to said particular location, wherein
estimating said effect comprises estimating said effect of noise caused by said one or more noise sources based further on said reception measurement data.

5. The method according to claim 4 , wherein said audio reception measurement data is provided by one or more noise sensors placed at said particular location.

6. The method according to claim 1 , wherein said audio processing device is integrated into a television.

7. A system comprising:
a communication module; and
an audio processing device comprising at least one processor configured to:
receive via the communication module noise measurement data from an audio sensor, the noise measurement data corresponding to one or more noise sources;
receive location or orientation information related to said one or more noise sources and to a particular location;
determine spatial orientation data associated with the particular location relative to said one or more noise sources using the location or orientation information;
estimate, based on said noise measurement data and said spatial orientation data, an effect of noise caused by said one or more noise sources at said particular location; and
modify one or more output audio streams based on said effect of noise, to cancel said effect of noise caused by said one or more noise sources at said particular location;
wherein said one or more noise sources are located remotely from the particular location and the audio device.

8. The system according to claim 7 , wherein the communication module is operable to receive said noise measurement data via at least one wireless personal area network (WPAN) or wireless local area network (WLAN) interface.

9. The system according to claim 7 , wherein said noise measurement data comprises a sampling of noise signals as captured at said one or more noise sources.

10. The system according to claim 7 , wherein the audio processing device is configured to:
receive audio reception measurement data corresponding to said particular location; and
estimate said effect of noise caused by said one or more noise sources based further on said reception measurement data.

11. The system according to claim 10 , wherein said audio reception measurement data is provided by one or more noise sensors placed at said particular location.

12. The system according to claim 7 , wherein said audio processing device is integrated into a television.

13. A method comprising:
receiving noise measurement data corresponding to a noise source;
receiving location or spatial orientation information related to the noise source and a particular location;
determining spatial orientation data associated with the particular location relative to said noise source using the location or spatial orientation information;
estimating, by a processor, an effect of noise caused by said noise source at said particular location based on said spatial orientation data; and
modifying an output audio stream to cancel said effect of noise at said particular location;
wherein the noise source is located remotely from the particular location and the audio device.

14. The method of claim 13 , wherein:
receiving noise measurement data comprises receiving noise measurement data for each of a plurality of noise sources; and
modifying said output audio stream comprises modifying said output audio stream according to an adjustment of a combination of said noise measurement data for each of said plurality of noise sources.

15. The method of claim 13 , comprising:
estimating, by said processor, an effect of noise at a second particular location caused by said noise source; and
modifying said output audio stream to cancel said effect of noise at said second particular location.

16. The method according to claim 13 ,
comprising receiving said noise measurement data via at least one wireless personal area network (WPAN) or wireless local area network (WLAN) interface.

17. The method according to claim 13 , comprising tracking one or more delays associated with at least one of receiving said noise measurement data, estimating said effect of noise, or modifying said output audio stream.

18. The method according to claim 17 , comprising determining, based on said tracking, whether said output audio stream may be modified within a time for a modified output stream to arrive at said particular location and cancel said effect of noise.

19. The method according to claim 13 , comprising determining a relative separation between said noise source and said particular location using a sensor.

20. The method according to claim 19 , wherein estimating said effect of noise comprises estimating said effect of noise caused by said noise source based further on said relative separation.

Assignees

• Pearlstein Larry
• Broadcom Corp

Inventors

• Pearlstein Larry

Classifications

• G10K2210/3023

  Estimation of noise, e.g. on error signals · CPC title

• G10K2210/108

  Communication systems, e.g. where useful sound is kept and noise is cancelled · CPC title

• G10K11/1788 Primary

  Physics · mapped topic

• G10K11/17881

  the reference signal being an acoustic signal, e.g. recorded with a microphone · CPC title

• G10K11/17827

  Desired external signals, e.g. pass-through audio such as music or speech · CPC title